Final answer:
The trumpet produces higher-pitched sounds than the tuba due to the difference in their pipe lengths.
Step-by-step explanation:
The most important difference between a trumpet and a tuba is the length of their pipes. The tuba's pipe is much longer than the trumpet's. This difference affects the relative pitches of the two instruments because the length of the pipe determines the fundamental frequency produced.
A longer pipe length produces a lower pitch, while a shorter pipe length produces a higher pitch. The trumpet, with its shorter pipe, produces higher-pitched sounds compared to the tuba.
For example, if a trumpet plays a note with a frequency of 440 Hz, the tuba will produce the same note but at a lower pitch due to its longer pipe length.